1 Department of Community Medicine, Institute of Health and Society, University of Oslo Faculty of Medicine, Oslo, Norway.
2 Department of Endocrinology, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders (BIRDEM), Dhaka, Bangladesh.
3 Department of Community Medicine, Institute of Health and Society, University of Oslo Faculty of Medicine, Oslo, Norway. ; Unit for Biostatistics and Epidemiology, Oslo University Hospital, Oslo, Norway.
4 Executive Diabetes Care Centre, NHN, Diabetic Association of Bangladesh, Dhaka, Bangladesh.